Computer Fundamentals and Hardware Basics

Traditional typewriters had Tab, Spacebar, and Backspace (or equivalent backspace mechanism), but did not have an Enter/Return key. Line breaks on typewriters were created by a carriage return lever, not a key. The Enter key is a computer keyboard addition for sending commands or confirming input.

A computer virus is a malicious software program that attaches itself to legitimate programs and replicates by inserting copies into other programs or documents. Options A and B describe physical/biological entities. Option C is incorrect - viruses are specifically designed malicious code, not just data the computer fails to handle.

PASCAL, C++, and JAVA are all well-known programming languages. APPLE is a company name (and a brand of computers/phones), not a programming language. While Apple has created programming languages (Swift), APPLE itself is not a language name.

In Windows Explorer tree view, a plus (+) sign indicates a folder contains subfolders and is currently collapsed (not expanded). Clicking the plus expands the folder to show its subfolder structure. An open/expanded folder shows a minus (-) sign instead. Text and graphics files appear as icons, not with expand/collapse indicators.

This is an EXCEPT question asking for the FALSE statement. Files are stored on permanent storage media like hard drives, SSDs, or flash drives, not in RAM. RAM is volatile memory that loses its contents when power is turned off. The other statements are all true: files are organized collections of data, applications create files, and organizing files in folders is good practice. Files may be loaded into RAM temporarily when accessed, but are not stored there permanently.

This is an EXCEPT question asking what does NOT happen during POST. POST runs hardware diagnostics during boot: testing video cards, memory, BIOS identification, and other essential hardware. ScanDisk is a Windows disk diagnostic and repair utility that runs after the OS is fully loaded, not during the BIOS-controlled POST phase. POST happens before any operating system loads, while ScanDisk requires Windows to be running.

The kernel is the core part of an operating system that remains in memory (RAM) at all times, managing CPU, memory, and hardware resources. The registry is a Windows configuration database, API is an interface for applications, and CMOS is BIOS configuration memory on the motherboard. The kernel is always memory-resident because it must handle every system call and hardware interaction. Terms like 'resident' mean staying in memory continuously.

POST (Power-On Self-Test) is the BIOS process that checks essential hardware components including peripherals during boot. It verifies memory, keyboard, disk drives, and other critical devices are present and functioning before the OS loads. CMOS stores BIOS settings, ROM contains the BIOS code itself, and configuration is a general concept. POST specifically performs the peripheral operational check.

BIOS firmware is stored in ROM (Read-Only Memory) chips on the motherboard, specifically in EEPROM or flash memory. ROM is non-volatile and retains its contents without power, unlike RAM which is volatile. The CPU executes BIOS code but doesn't store it. The hard drive stores the OS and applications, not the BIOS itself. ROM ensures BIOS is available immediately upon power-on for the boot process.

Platform refers to the combination of hardware architecture (processor/CPU type) and operating system software that defines the computing environment. For example 'Windows on Intel' or 'Linux on ARM' are platforms. CPU is just the processor, BIOS is firmware, and CMOS is configuration memory - none of these capture both hardware and OS together. Platform is the standard term for the hardware/OS combination in computing.

Thrashing occurs when the operating system spends excessive time swapping pages between virtual memory (disk) and RAM, leaving little time for actual process execution. This happens when the degree of multiprogramming is too high relative to available memory. Options B, C, and D refer to unrelated issues: disk space, CPU management, and Windows registry problems respectively.

In Windows Explorer, a plus (+) sign indicates that a folder contains subfolders and can be expanded to show them. This is standard Windows UI convention.

Files are stored on secondary storage devices like hard disks or SSDs, not in RAM. RAM is volatile memory used for temporary data while the computer is running - it loses all contents when power is turned off. Files must persist on non-volatile storage to be retained between sessions. Organizing files in folders (A, D) and generating them from applications (B) are true statements about file management.

The Power-On Self-Test (POST) is a diagnostic routine that runs immediately after a computer is powered on. It tests hardware components like the video card (B), performs BIOS identification (C), and checks memory chips (D) to ensure basic functionality before booting. ScanDisk (A) is a Windows disk utility that runs optionally to check for file system errors and bad sectors - it is NOT part of the POST process.

The kernel is the core component of an operating system that resides in memory at all times. It manages CPU, memory, processes, and essential hardware operations. The registry (A) is a Windows database for configuration settings. API (B) refers to application programming interfaces for software communication. CMOS (C) is a memory chip that stores BIOS settings - not the operating system itself.

POST (Power-On Self-Test) is the process that verifies essential peripheral devices are connected and functional during system startup. It checks components like keyboard, mouse, disk drives, and other critical hardware before the OS loads. Configuration (A) is a general setup process. CMOS (B) stores BIOS settings. ROM (C) is read-only memory chips.

BIOS (Basic Input/Output System) firmware is stored in ROM (Read-Only Memory) chips on the motherboard. ROM is non-volatile memory that retains its contents without power and cannot be easily modified. RAM (A) is volatile memory cleared when power is lost. The CPU (C) is the processor that executes instructions. The hard drive (D) stores software and data, not the BIOS firmware itself.

The combination of operating system and processor architecture is called the platform. For example, 'Windows on x86' or 'Linux on ARM' are platforms. The CPU (A) is just the processor component. BIOS (B) is the firmware interface. CMOS (C) is the memory chip storing BIOS settings. Platform encompasses both hardware (processor type) and software (OS) together.

Thrashing occurs when the operating system spends excessive time swapping data between virtual memory (disk) and RAM, leaving little time for actual program execution. This happens when running too many programs or programs requiring more memory than physically available. It causes severe performance degradation as the system constantly reads/writes to disk instead of processing.

In Lotus Notes, the Managers field contains user names who have full access including ACL management. Authors can create but not delete documents, Readers can only read, and Editors can modify documents but not manage access at the field level. The Managers field is specifically for access control.